在多色文本图像中的每个单词之间添加空格

I am trying to produce multi-colored text image with Imagemagick and PHP. The following code works, but I cannot insert a space after each word. I have tried various settings, nothing is working. Should I use annotate or draw text command instead of label? Label seems to be simple to use here.

$file = 'font.ttf'; 

$command = "convert -background white -fill black -font $file -pointsize 80 -density 90 label:New  -fill black -font $file -pointsize 80 -density 90 label:Here -fill red -font $file -pointsize 80 -density 90 label:? +append $multi-color-text.png"; 

exec($command);

Update: Solution

Remarks: Spaces do not work in command line. So, I need to escape double quotes with a forward slash.

This has worked:

$command = "convert -background white -fill black -font $file -pointsize 80 -density 90 label:\"New \"  -fill black -font $file -pointsize 80 -density 90 label:\"Here \" -fill red -font $file -pointsize 80 -density 90 label:? +append $multi-color-text.png";

Thank you all, especially Fred!

In your case it seems like it would be better to use -annotate once you want to insert multiple texts instead of using -label.

Example of use of -annotate: http://www.imagemagick.org/Usage/annotating/#gravity_text